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bill937ca
Joined: 03 Sep 2013
Posts: 20
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 Posted: Sat Sep 07, 2013 7:34 pm Post subject: GM Offers Air Conditioning |
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In August 1958, GM issued a brochure on the new air conditioning system available in transit models TDH-5105 and TDH-5106 and the suburban TDM-5108 after two full summers of testing in revenue service. The capacity was nearly twice that offered in GM's 41-passenger intercity coaches. This offset the effects of frequent opening of doors, large standee loads and prolonged engine idling. The air was chilled to 45 degrees which should provide a comfortable temperature 10 to 30 degrees below the outside temperature. The price was $4500. By comparison Chicago paid just over $20,000 per bus for its 8200 series Flxibles.
AC was expensive! My memory is that most of these units wound up on TDM-5108 coaches and transit air-conditioning did not catch on until the New Look era.
Bill
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| A Big 2800 cubic feet... of cooled air a minute. 8/58 |
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frankie
Age: 77
Joined: 01 Feb 2011
Posts: 748
Location: St. Peters, Mo.
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| Posted: Sun Sep 08, 2013 11:38 am Post subject: |
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What may be under the GM oddity heading on the above bus are the double license plate wells in the back of the bus. I'm not sure if other examples exists.
Just thought I'd throw that in!
Frankie
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traildriver
Joined: 26 Mar 2011
Posts: 2579
Location: South Florida
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| Posted: Tue Sep 10, 2013 10:28 pm Post subject: |
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| The rear window looks kind of like it came from a PD-4103....
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Mr. Linsky
BusTalk's Offical Welcoming Committee
Joined: 16 Apr 2007
Posts: 5071
Location: BRENTWOOD, CA. - WOODMERE, N.Y.
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| Posted: Wed Sep 11, 2013 2:10 am Post subject: |
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| frankie wrote: | What may be under the GM oddity heading on the above bus are the double license plate wells in the back of the bus. I'm not sure if other examples exists.
Just thought I'd throw that in!
Frankie |
frankie,
Not so odd when you consider that there were transit companies that required at least two license plates including the Omaha and Council Bluffs Street Railway Company that served Omaha Nebraska and Council Bluffs Iowa across the Missouri River.
They carried a plate for each state as seen on the front of O. & C. B. St. Ry Co. #758 (a beautiful TDH 4507).
Photo thanks to NorCal Bus Fans.
Regards,
Mr. 'L'
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Cyberider
Joined: 27 Apr 2007
Posts: 886
Location: Tempe, AZ
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| Posted: Sat Jun 08, 2024 3:54 pm Post subject: |
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| An important consideration at this time of year, even though we used to get along without it, even down here in the Phoenix area. We didn't have any factory equipped Old Looks but Valley Transit installed aftermarket AC that worked very well, as I recall. I have a photo of one of these somewhere which may be posted on BusTalk in the distant past.
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traildriver
Joined: 26 Mar 2011
Posts: 2579
Location: South Florida
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| Posted: Sat Jun 08, 2024 9:37 pm Post subject: |
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| What surprised me in re reading that ad, was they could cool the 40 foot, 2 door transit or suburban, without the need for the separate "pony engine", that the PD-4104 required.
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Cyberider
Joined: 27 Apr 2007
Posts: 886
Location: Tempe, AZ
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| Posted: Sun Jun 09, 2024 2:43 pm Post subject: |
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Maybe they installed larger injectors so the bus had enough power when the AC was turned on. Still looking for my photos of the Phoenix buses with the add-on AC. These had their own engine.
In the meantime, found a photo of one of the factory AC buses in derelict condition. Unfortunately, "The Attachment is too big for this site.
Max Size: 256 KB." I'll have to figure out how to shrink them to post them. I have hundreds or maybe even thousands of Old Look photos.
| traildriver wrote: | | What surprised me in re reading that ad, was they could cool the 40 foot, 2 door transit or suburban, without the need for the separate "pony engine", that the PD-4104 required. |
[img][/img]
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Cyberider
Joined: 27 Apr 2007
Posts: 886
Location: Tempe, AZ
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| Posted: Sun Jun 09, 2024 5:19 pm Post subject: |
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Here is a FACL with the factory AC.
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Cyberider
Joined: 27 Apr 2007
Posts: 886
Location: Tempe, AZ
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| Posted: Sun Jun 09, 2024 5:22 pm Post subject: |
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D.C. Transit with factory installed AC.
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Cyberider
Joined: 27 Apr 2007
Posts: 886
Location: Tempe, AZ
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| Posted: Sun Jun 09, 2024 5:29 pm Post subject: |
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NJPS.
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traildriver
Joined: 26 Mar 2011
Posts: 2579
Location: South Florida
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| Posted: Sun Jun 09, 2024 10:22 pm Post subject: |
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I can just imagine the surprise and delight of unsuspecting passenger's boarding that Fifth Avenue bus on a sweltering hot and humid summer day in New York back in those days.... 
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Cyberider
Joined: 27 Apr 2007
Posts: 886
Location: Tempe, AZ
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| Posted: Tue Jun 11, 2024 4:45 pm Post subject: |
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| traildriver wrote: | | I can just imagine the surprise and delight of unsuspecting passenger's boarding that Fifth Avenue bus on a sweltering hot and humid summer day in New York back in those days.... |
Indeed! But, I don't remember whether there were just one or two of them or there was a whole fleet of them.
An interesting feature, that I hadn't paid attention to in the past, are the "fins" on each side of the unit. I guess they wanted to be in tune with the current fad with automobiles even if they were sticking it on a 1940-design bus body.
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